October Weather in Port Jefferson Station, United States

Last updated: June 24, 2025

In October, the average temperature in Port Jefferson Station, United States hovers around 16°C (61°F). You'll experience a range of temperatures, with a minimum of 5°C (41°F) and a maximum of 29°C (84°F). Prepare for the possibility of rain, as 143 mm (5.6 in) of precipitation is expected over 12 days, along with an average humidity of 74%.

October Temperature in Port Jefferson Station

In October in Port Jefferson Station, the average temperature is 16°C (61°F). Maximums can reach 29°C (84°F), while minimums can drop as low as 5°C (41°F). This variation in temperature makes it an ideal time for travelers to enjoy outdoor activities while also packing a light jacket for cooler evenings.

October Weather in Port Jefferson Station: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Port Jefferson Station, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Jefferson Station, October typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (84°F) and lows dropping to around 5°C (41°F).

Data source: Temperature data for Port Jefferson Station generated using information from the Copernicus Climate Change Service.

October Precipitation in Port Jefferson Station

In Port Jefferson Station in October, the total precipitation amount is 143 mm (5.6 in) over the course of 12 days.

October Precipitation Trends in Port Jefferson Station

The chart displays monthly precipitation patterns in Port Jefferson Station, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Port Jefferson Station, October typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Port Jefferson Station

In Port Jefferson Station in October humidity is 74%. With an average temperature of 16°C (61°F), this humidity feels like a damp blanket wrapping around you, making traveling quite uncomfortable as the air feels thick and muggy, potentially leading to fatigue and a longing for a cool breeze.

October Average Humidity in Port Jefferson Station

This chart illustrates the average monthly humidity levels in Port Jefferson Station, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Port Jefferson Station is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Port Jefferson Station

In Port Jefferson Station in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Port Jefferson Station, you can refer to this Hourly UV Index in Port Jefferson Station.

Maximum UV Index Levels in Port Jefferson Station for October

The chart shows the monthly maximum UV Index (UVI) for Port Jefferson Station in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Port Jefferson Station typically reaches 6, which falls under the high exposure category.

Data source: Port Jefferson Station October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in Port Jefferson Station Compares to Other Months

Weather in Port Jefferson Station varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Port Jefferson Station, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Port Jefferson Station, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	2°C (35°F)	80 mm (3.1 inches)	84%	moderate
February Weather	2°C (36°F)	112 mm (4.4 inches)	82%	moderate
March Weather	4°C (40°F)	104 mm (4.1 inches)	81%	high
April Weather	9°C (49°F)	132 mm (5.2 inches)	78%	very high
May Weather	14°C (58°F)	119 mm (4.7 inches)	69%	very high
June Weather	20°C (68°F)	87 mm (3.4 inches)	69%	very high
July Weather	24°C (76°F)	131 mm (5.2 inches)	62%	very high
August Weather	24°C (75°F)	103 mm (4.0 inches)	65%	very high
September Weather	21°C (70°F)	94 mm (3.7 inches)	68%	very high
October Weather	16°C (61°F)	143 mm (5.6 inches)	74%	high
November Weather	9°C (49°F)	103 mm (4.0 inches)	82%	moderate
December Weather	5°C (40°F)	140 mm (5.5 inches)	80%	low